Update for clearing the source cache in newer versions of MapboxGL (eg 2.9+).
Fix up clearing the source cache in MapboxGL
Add an ImageService class
Fix layers parameter for identify calls.
Add support for fetch options to support authorization headers.
Improve Dynamic Map Service requests by including a imageSR, size and dpi params. Setting imageSR particuarly helps with tile edges.
Remove unused import from bundle
Initial alpha release